From a8ef4698e6e858a65db1ebc02f29e424eb41dde2 Mon Sep 17 00:00:00 2001
From: DDDHuang <44492639+DDDHuang@users.noreply.github.com>
Date: Fri, 13 May 2022 15:50:46 +0800
Subject: [PATCH] feat: dashboard monitor missed topics field

---
 apps/emqx_dashboard/src/emqx_dashboard_monitor.erl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/apps/emqx_dashboard/src/emqx_dashboard_monitor.erl b/apps/emqx_dashboard/src/emqx_dashboard_monitor.erl
index 53594945d..445e2d2b7 100644
--- a/apps/emqx_dashboard/src/emqx_dashboard_monitor.erl
+++ b/apps/emqx_dashboard/src/emqx_dashboard_monitor.erl
@@ -244,7 +244,7 @@ merge_cluster_sampler_map(M1, M2) ->
     Fun =
         fun
             (topics, Map) ->
-                Map;
+                Map#{topics => maps:get(topics, M1)};
             (Key, Map) ->
                 Map#{Key => maps:get(Key, M1) + maps:get(Key, M2)}
         end,